Automobile-engine.



A. S. KROTZ.

AUTOMOBILE ENGINE.

APPLIOATION FILED DEO.16, 190a.

Patented Nov. 16, 1909.

, I fi I P Q w l l I 1 irfiin ri es ernsr enrich ALVARO S. KROTZ, Q? CHICAGO, ILLINOIS, ASSZGNQB 1K3 SEARS, EMBEBUCK & CGMPANY, 01" CHICAGO, ILLINOIS, A CORPURATEON 0F ILLINDIS.

AUTOMOBILE-ENGZNE.

Specification of Letters Patent.

Patented Tom 16. loos.

Application filed December 16, 1908. Serial No. $67381 To all whom it may conccm: I

Be it known that I, ALvARo S. Know, a citizen of the United States, residing at gines, of which the following is e. specification.

One of the objectsd this invention is to provide improved means for discharging the exhaust from internal combustion engines,a means which shall obviate the necessity of using special niuifiing devices of the ordinary type, which shell create as little backpressure as possible upon the engine, and which shall be of simple, inexpensive and durable construction.

A further object of the invention is to usilize the exhaust piping for siipporling a pan below the engine.

in the occoinpan ing drawings Figure l is ii top plan View of :1 portion of an. autoinobile chassis showing on engine and c:=;-

heust pipes supported thereby. Fig. 2 is a side elevation of the structure shown in ilig. 1. Fig. 3 is a. section on line 3 3 of 'E'g. l is e i'rognientel longitudinal secrough one the exhaust pipes.

rhe drawings 1 designates the longi-. tudinal sills oi on automobile chassis, snicl sills being connected by the cross bars :2 and 3. 1 engine l in the form herein illu trs'ic comprises two opposed. cylinders The engine is sup orted' with its cylinders extending tronsve of the chassis and below the some i) any suitable means, as for eszznnple, brackets 6 supporting the ends of the cylinders and iihanger Tengaging one ihe hearings for the engine shaft. sold hunger being supported by the cross lo the embodiment of my invention herein showi'i, the moons a ducting sway the exhaust from the" engine comprises two vertically extending pipes 8 ouch connected its upper end with the exhaust outlet of one of the cg nnders, said pipes consequently located at opposite ends of the engine. To the lower ends of the pipes 8 are connected the forward ends of the horizontally extending pipes 9, the rear ends of said pipes being supported in any suitable manner, as for esiemple, by means of hangers 10 secured to he longi turlinol sills 1. The rear ends he pipes 'ceive the exhaust from each cylinder.

for receiving and con 9 may be closed, as herein shown, if desired. Said pipes have exhaust outlet openings therein, preferably in the inner side of said pipes, and in the rear portions thereof. Said openings may be in the form of slots 11', as herein shown, the slots preferably being inclined resrwsrdly and downwardly, as indicated in Fig. l. The area of the slots 11 preferohlyequals or exceeds the cross-sec- I tional area of the pipes 9.

Connecting the lower ends of the pipes 8 and the forward ends of the pipes 9 is a transverse pipe 12. If desired, a relief valve 13 of any common or preferred form may be located in the pipe 12 and arranged foraotuetion in any suitable nnmncr by the driver of the machine. I v

The length of the pipes 9 and the crosssectioniil arcs of said pipes and the pipes 8 and .12 are preferably sullicient'to constitute said pipes a relatively large receptacle for the exhaust.

ln operation the exhaust from the engineescapcs to the atmosphere through the openings ill. Said openings being arranged at intervals in the length of the pipes 9, the exhaust is gradually expanded as it travels toward. the rear ends of said pipes, the expansion osing so. grnclunl as to reduce the noise a minimum. 1 have :found thct with s stem of exhaust pipes as herein shown, use oi special devices for muffling t .e noise of the exhaust is rendered unnecessary.

When two-c3 er engine is used engine cylinders alternately, and both of the pip-eel end the transverse pipe 12 rewill th ore he seen that each cylinder is provide. with e, lnr e outlet close to the engine, whereby s pressure upon the engine is o iis large, outlet is due partly to the provision of on individual exhaust pipe 9 for esch cylinder, and partly to the crossconnection 152,, said connection permitting each cylinder to exhaust into both oil the pipes Q.

The embodiment herein shown of my invcntion is susceptible of various modifications, therefore no undue limitation should he understood from the foregoing detailed. description.

iclr exhaust with inini I claim as my invention! 1. In an automobile, in combination, a chassis; an internal combustion engine comprising two opposed cylinders, said engine being secured to said chassis and being disposed in a horizontal position beneath the chassis and extending transversely thereof; an individual exhaust pipe for each cylinder, said pipe communicating at its forv ward end with its cylinder and extending lengthwise of the chassis; and a transverse pipe connecting the forward portions of said individual exhaust pipes.

2. In an automobile, incoihbination, a

chassis; an internal combustion engine comprising two cylinders, said engine being secured to said chassis; an individual exhaust pipe for each cylinder, said pipe communicating atits forward end with its cylinder and extending lengthwise of the chassis; a transverse pipe connecting the forward portions of said individual exhaust pipes; and a relief valve located in said transverse connecting pipe.

3. In an automobile, in combination, a chassis; an internal combustion engine comprising two cylinders, said engine being seconnected at one of its ends with the lower end of one of said vertically extending pipes; and a transverse pipe connecting the pipes afiording an outlet for the exhaust.

. An engine comprising two opposed cylinders; two vertically extending exhaust pipes each connected at its upper end with one of said cylinders; two exhaust pipes atfording an outlet for the exhaust, and each connected at one o fits ends with the lower end of one of said vertically extending pipes; and a transverse pipe connecting the lower ends of said vertically extending pipes and the forward ends of thepipes that atford an outlet for the exhaust.

' 6. The combination, with an engine, of a pipe communicating at one end with the exhaust outlet of said engine, said pipe being slotted at intervals in its length.

7. The combination, with an engine, of a pipe communicating at one end with the exhaust outlet of said engine, said pipe being slotted at intervals in its length, the slots being inclined.

8. The combination, with an engine, of a pipe communicating at one end with the exhaust outlet of said engine, said pipe being slotted at intervals in its length, the other end of said pipe being closed.

1). The combination, with an engine, of a pipe c(')m1nunicating at one end with the exhaust outlet of said engine, said pipe being slotted at intervals in its length, the slots being inclined, and the other end of said pipe being closed, the aggregate size of said slots being at least equal to the cross-sectional area of said pipe.

ALVARO S. KRQTZ.

Witnesses:

WALTER L. Hunson, GEORGE I1. GHINDAHL. 

